A few nice ufo images I found:

UFO from Castle

Image by Richard Parmiter
The very unusual ‘UFO’ bridge in Bratislava.

Built by Doprastav and Hutni montaze Ostrava between 1967 and 1972 it is the longest cable-stayed bridge with just one pylon and is the only bridge in the list of the World Federation of Great Towers.

It is now a trendy restaurant.

Obama UFO (Large)

Image by trisagio
Obama OVNI – UFO (Large)